I just saw my p-doc and he told me that klonopin shouldn't be taken at bedtime because while it can make you sleepy, the effect is short-lived and the k-pin screws with deep sleep. He also told me that k-pin can block the effectiveness of BuSpar. And, according to what he said, long-term k-pin can actually cause rebound anxiety (makes anxiety worse). I don't know if I believe anything he said...just passing the info along.